Finding the Fourth Proportional to 31,038.18, 46,557.47 and 21,152.94

Step by Step Solution

1. Step 1: Write the proportion equation
   31,038.18 : 46,557.47 = 21,152.94 : x
2. Step 2: Convert to fraction form
   31,038.18/46,557.47 = 21,152.94/x
3. Step 3: Cross multiply
   31,038.18x = 46,557.47 × 21,152.94
4. Step 4: Simplify right side
   31,038.18x = 984,827,369.46
5. Step 5: Solve for x
   x = 984,827,369.46/31,038.18
6. Step 6: Final answer
   x = 31,729.55